Grain-car door



M. McLELL-AN.

GRAIN CAR DOOR.

APPLICATION FILED NOV. 8, 1918.

1,357,106, Patented Oct. 26,1920.

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M. McLELLAN.

GRAIN CAR DOOR.

APPLICATION FILED NOV. 8 1918- 1,357,1'06' Patented Oct. 26,1920.

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UNITED STATES PATENT OFFICE.

MALCOLM MCLELLAN, OF PERRY SOUND, ONTARIO, CANADA.

GRAIN-CAR noon.

To all whom it may concern:

Be it known that I, MALooLM MOLELLAN, a citizen of the Dominion of Canada, residing at Perrjyg Sound, in the Province of Ontario and ominion of Canada, have invented new and useful Improvements in Grain-Car Doors, of which the following is a specification.

This invention relates to grain doors for railway cars and it has particular reference to that class of grain doors that comprise in their construction a plurality of sections arranged in superposed relation with respect to one another.

One object of the invention is to produce a simple and improved construction whereby each superposed section will serve to retain in tightly closed position the section next below the same.

A further object of the invention is to pro duce a simple and improved construction whereby a grain door capable of being tightly closed will be formed.

A further object of the invention is to produce a simple and improved construction whereby the sections of the door may be safely retained in their'closed or open positions.

With these and other ends in view which will readily appear as the nature of the invention is better understood, the same consists in the improved construction and novel arrangement and combination of parts which will be hereinafter fully described and particularly pointed out in the claim.

In the accompanying drawings has been illustrated a simple and preferred form of the invention, it being, however, understood that no limitation is necessarily made to the precise structural details therein exhibited, but that changes, alterations and modifications within the scope of the claim may be resorted to when desired.

In the drawings Figure 1 is a side elevation of one side of a car equipped with the improved grain door.

Fig. 2 is a side elevation of the inner face of the car wall, the door being closed.

Fig. 3 is a side elevation of the inner face of the car wall, the door being open.

Fig. 4 is a horizontal sectional view taken I on the line 4-4 in Fig. 1.

the line 5-5 in Fig. 5 is a vertical sectional view taken on Fig. 1.

Specification of Letters Patent. Patented 0 1;. 26 1920 Application filed November 8, 1918.

Serial No. 261,750.

it being understood that two or more door sections may be employed. The hingesH are secured on the inner faces of the car wall and of the door sections, respectively, the door sections being thus adapted to fold inwardly within the car. Each door section is composed of two leaves, namely a long leaf 17 and a short leaf 18, said leaves being connected together by hinges K which are secured on the outer faces of the respective leaves. The lines of division 19 between the long and the short leaves of the respective door sections are arranged in staggered relation, the leaves of each door section breaking joints with those of the proximate door sections. Secured on the inner faces of the sides of the door opening adjacent to the outer face of the car wall are cleats 20 and 21, the cleat21 forming an abutment for the free ends of the door sections, while the cleat 20 forms an abutment for the hingedly supported ends of said door sections. An other cleat 22 is secured on the inner face of the car wall, said cleat cooperating with the cleat 21 to form a groove or recess 23 for the reception of the free ends of the door sections which may be inserted in said groove by partly swinging the leaves 1718 on the hinges K to clear the cleat 22, after which, by outward pressure upon the leaves, the free end of one leaf will be forced into the groove.

The lower door sections, including in the present instance, the sections D and D and including in any case all except the uppermost door section, are provided on their in ner edges adjacent to their upper edges with grooves or rabbets 24, and the upper door sections, including in any case all except the lowermost door section, are each provided in their outer edges adjacent to their 1 above has been opened. This result is due not merely to the presence of the interlocking lap joints but also in part to the stag gered relation of the joints in alternate door sections, since if the joints were not staggered it might be possible to simultaneously open two or more door sections.

The topmost door section is spaced from the top of the door opening, leaving an open space through which a turn button 26, mounted interiorly on the car wall above the door opening member reached for the purpose of securing the topmost door section in closed position. There is also secured within the groove 23, adjacent. to the top of the door opening, a stop member 27 which will prevent the free end portion of the topmost door section from swinging upward, in the event of the hinges becoming loose, the said stop member serving also to prevent upward displacement at the free end of the topmost door section due to any cause whatever.

Secured on the inner face of the car wall 15 is a vertical cleat 28 of a thickness equal to the thickness of the respective door sec tions which, when opened, will swing in the direction of the cleat where they may be secured by means of turn buttons 29 mounted on said cleat.

The lowermost door section is provided with a small door opening 29, the same being preferably formed in the large leaf 17 of said door section. The opening 29 constitutes an outlet which may be closed by a door 30 supported by a hinge 31 and adapted to be retained in closed position by a turn button 32.

From the foregoing description taken in connection with the drawings hereto annexed, the operation and advantages of this invention will be readily understood. WVhen the car is being filled the door sections may be successively closed, the lowermost one first and soon, each door section being held securely closed by the pressure of the material loaded into the car. Each door section, as it is being closed, also serves to. lock the subjacent door'section securely in position, preventing its being opened by pressure applied on the outside. The topmost door section is secured'by the turn button 26 which is accessible from the outside. The customary external sliding door may, of course, be used but it has not beenshown as it forms no part of the present invention. When unloading the car, the door 30 which swings outwardly is opened and when the car is emptied the door sections may be secured in an opened position flat against the side wall of the car by means of the turn buttons 29.

What is claimed is The combination of a car having a door opening, and a grooved door post, a door comprising a plurality of sections super-imposed, all of said sections being hinged at the same side of the door opening and upon the inner face of the car wall, each door section being composed of a long and short leaf, hinges connecting said leaves, and arranged on the outer surface thereof, said long and short leaves of the respective door sections being alternately disposed to break the joints, and means for holding said door sections in an open position,'parallel with and against the wall of the car.

In testimony whereof I affix my signature MALCOLM McLELLAN. 

